Spring hung sash construction



I Dec. 6, 1932. 5, MADSEN 1,889,752

SPRING HUNG SASH CONSTRUCTION Original Filed March 24, 1930 2 Sheets-Sheet 1 Dec. 6, 1932. s. MADSEN v SPRING HUNG SASH CONSTRUCTION 2 Sheets-Sheet 2 Original Filed March 24, 1930 lmV WW wiry Patented Dec. 6, 1932 T FFHE,

SEEN MADSEN, OF CLINTON, IOWA, ASSIGNOB TO CURTIS COMPANIES, INCORPORATED, F CLINTON, IOWA, A CORPORATION OF IOW'A.

SPRIIN'G- HUNG- SASH CONSTRUCTION Original application filed March 24, 1930, Serial No. 488,451. Divided and this application filed April 14,

1930. Serial The object of my invention is to provide a spring means for hanging the sashes of window frames, the construction being simple, durable and inexpensive.

a A further object is to provide'springs instead of sash cords and weights for counter balancing the sashes of windows, the parts being so arranged that the springs and sashes are easily assembled relative to the window and can be easily renewed if desired.

Another object is the elimination of window weights and the necessary boxes therefor whereby a narrower window trim can be used which lends to the architectural beauty of the construction.

A further object is to provide straight line extension springs for suspending the window sashes, the side jambs, side stiles of the sash and the window stops cooperating with each other to house the springs.

With these and other objects in view my invention consists in the construction, arrangement and combination of the various parts of my spring hung sash construction,

whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims, and illustrated in the accompanying drawings, in which:

Figure 1 is an outside elevation of a window frame showing the left hand side thereof with parts broken away and with other parts shown in section to illustrate the invention fully.

Figure 2 is a similar view of the right hand window frame as viewed from the inside of a building.

Figure 3 is a vertical, sectional view on the line 33 of Figure 1.

Figure 4 is a horizontal, sectional view on the line 44 of Figure 1; and

Figure 5 is a similar horizontal, sectional view illustrating a slightly modified form of construction.

My present application has to do with a 4 novel spring suspension for window sashes,

which construction is claimed per se and the present application is a division of my copending application, Serial Number 438,451, filed March 24, 1930, claiming the combination of s ring hung sashes and a resilient parting ead to compensate for the differential in spring tension.

On the accompanying drawings I have used the reference numeral 10 to indicate a sill of a window. frame A. The head jamb of the window frame A is indicated at 12 and the side jambs thereof at 14. An upper sash is indicated at B and a lower sash at C. The sashes B and C are slidably mounted relative to the window frame A between blind stops 16, parting stops l8 and innerstops 20 in the ordinary manner. Instead of providing the usual sash cords, weight pulleys, weights and weight boxes for the window frame, I eliminate all of these elements and 5 provide a pair of straight line extension springs 30 and 32 for the upper sash B and lower sash C respectively.

The side jambs 14 are provided with channels 34 and 36 to partially receive the springs 30 and 32 respectively.

The window sashes B and C are provided with channels 38 and 40 at the corners of the side stiles where the blind stop 16 is provided with a channel 42 and the inner stop with a 75 channel 44 as best shown in Figure 4 of the drawings, The channels 34, 38 and 42 conjointly house the spring 30, while the channels 36, 40 and 44 conjointly house the spring 32.

The upper ends of the springs 30 and 32 are secured to the side jambs 14 by means of screws 46 and 48. The lower ends of the springs 30 and 32 are secured to the window sashes B and C by screws 50 and 52 or other suitable means. The tension of the springs 30 and 32 is preferably designed to balance the weight of the sashes B and C vertically midway of the window frame A.

Accordingly, the lower ends of the springs may be secured to the window sashes, as shown, or at any points between the tops and bottomsof the sashes to suit the spring tension required to best balance the sashes. Thus, when the sashes are moved above such midway position they will be moved against their weight which tends to lower them, while when moved below such midway position they will be moved against the tension of the spring which tends to raise them. Thus, a differential in the action of the springs is encountered, which must be overcome to prevent the sashes from moving freely to the central position and to retain the sashes in any posltion to which they may be adjusted.

To retain the sashes in any adjusted position the parting stop 18 may be replaced by one of resilient construction as illustrated in my co-pending application above referred to, or other resilient devices may be used for frictionally engaging the sashes to prevent their free sliding movement.

On the other hand, manually actuated locking devices, such as spring pressed pins, usually provided in connection with windows which do not have counter-balancing weights, may be used in the ordinary manner.

In Figure 5 I have illustrated a slightly modified form of spring suspension for the window sashes B and C in which the channels 38 and 42 are substantially the same, except a little deeper, while the channels 34 and 36in the side j ambs 14 are somewhat wider.

The springs and 32 have more room in which to operate and extend at a slight angle as illustrated. The blind stops 16 and the inner stops 20 instead of being provided with grooves 42 and 44 as previously described, are merely cut at a slight angle as illustrated at 42a and 44a respectively. Thus, the springs are housed by the grooves in the jambs and sashes and by one surface of each stop.

This construction does not interfere with advantages of the channel construction described in the first four figures of the drawings.

Certain advantages arise from forming the grooves for housing the springs and42conjointly in the jambs, the corners of the sashes and using the stops with or without grooves as part of the housing for the spring. When it is desired to remove a spring, a stop (which may be screwed or otherwise secured to the side jambs 14-as by screws 46) is first removed and the ends of the springs are then unhooked from the screws 46 and 50 or 48 and 52.

' This construction also provides an easy way of removing the sashes for any purpose. After thesprings are removed the sashes can be merely pulled out of the window frame. Thus, by having the grooves for the springs formed in the corners of the s ashes rather than having half circle grooves in the sashes and side j ambs, the springs do'not form keys to prevent removal of the sash. r

ing springs and removing sashes from the window frame.

The springs are much more easily replaced than sash weights of other constructions. It is believed, however, that the springs will last indefinitely and will not need replacement.

The spring housings formed by the stops 16 .and 20 and the grooves 30, 32, 34 and 36 are preferably substantially greater in'size than the springs themselves so that when one end of the spring is attached to the jamb and the other end is attached to the sash, the spring will extend diagonally, as shown in Figure 5. Thus the central portion of the spring, which would have most vibration during movements of the sash would be substantially midway between the sides of the housing. This prevents undesired spring noises and is one of the important features of the invention.

To eliminate the possibility of any water collecting back of the blind stops 16 I provide a notch 43 cut through from the outside of the blind stop to the back thereof or into the groove 42 as the case may be. Any water gethaving jambs and stops with a sash arranged to slide in the frame, said sash, jambs and stops each having a groove therein wherebyf to conjointly house springs, springs housed in said grooves. and respectively connected to I the sash and the frame, whereby removal of the stops from'the window frame will permit the springs to be disconnected and removed laterally without disturbing the sash, large grooves may be provided without undue weakening of the sash, ample stock may be left for installation of a Weatherstrip in the most desirable location therefor and whereby to permit insertion or removal of the sash relative to the window frame with said springs in operative connection with said sash and said frame.

2. A window frame having jambs and ice stops, a sash slidably mounted in said frame, balancing springs attached to said frame and to said sash, said sash and said jambs having opposing grooves adjacent the face of the sash and adjacent said stops whereby to form housings for said springs, said housings being thus closed by said stops whereby reb moval of said stops permits lateral removal of said springs without removing said sash and whereby said sash may be moved into or removed from said frame with said springs in operative connection with said sash and said frame.

3. A window frame having j ambs and stops, a sash slidably mounted in said frame, balancing springs attached to said frame and to said sash, said sash and said jambs having opposing grooves adjacent the face of the sash and adjacent said stops whereby to form housings for said springs, said housingsbeing thus closed by said stops whereby removal of said stops permits lateral removal of said springs without removing said sash and whereby said sash may be moved into or removed from said frame with said springs in operative connection with said sash and said frame, said grooves in said jambs extending laterally beyond the face of the sash to thereby provide greater space between said jambs and said sash for lateral removal or insertion of said springs when said stops are removed.

4. The combination of a window frame having jambs and stops with a sash arranged to slide in said frame, springs operatively connected at their ends with said frame and said sash, said sash having grooves to form housings for said springs conjointly with a face of each jamb anda side of each stop, said housings being thus closed by said stops whereby removal of said stops permits lateral removal of said springs without removing said sash- 5. The combination of a window frame having j ambs and stops with a sash arranged to slide in the frame, said sash, jambs and stops each having a groove therein whereby to conjointly house counterbalancing means, elongated resilient counterbalancing means housed in said grooves and respectively connected to the sash and the frame, whereby removal of the stops from the window frame will permit the counterbalancing means to be disconnected and removed laterally Without disturbing the sash, large grooves may be provided without undue weakening. of the sash,

ample stock may be left for installation of a Weatherstrip in the most desirable location therefor and whereby to permitinsertion or removal of the sash relative to the window frame with said counterbalancing means in operative connection with said sash.

6. A window frame having jambs and stops, a sash slidably mounted in said frame, elongated counterbalancing means attached to said frame and .to said sash, said sashiand said 'ambs having opposing grooves adjacent the ace of the sash and ad acent said stops whereby to form housings for the counterbalancing means, said housings being thus closed by said stops whereby removal of said stops permits lateral removal of said counteralancing means without removing said sash and whereby said sash may be moved into or removed from, said frame with said counterbalancing means in operative connection with said sash.

7 A window frame having jambs and stops, a sash slidably mounted in said frame, counterbalancing means attachm to said frame and to said sash, said sash and said jambs having opposing grooves adjacent the face of the sash and adjacent said stops whereby to form housings for said counterbalancing means, said housings being thus closed by said stops whereby removal of said stops permits lateral .removal of said counterbalancing means without removing said sash and whereby said sash may be moved into or removed from said frame with said counterbalancing means in operative connection with said sash, said grooves in said j ambs extending laterally beyond the face of the sash to thereby provide greater space between said jambs and said sash for lateral removal or insertion of said counterbalancing means when said stops are removed.

8. The combination of a window frame having jambs and stops with a sash arran ed to slide in said frame, counterbalancing means operatively connected at their ends with said frame and said sash, said sash having grooves to form housings for said counterbalancing means conjointly with a face of each jamb and a side of each stop, said housings being thus closed by said stops whereby removal of said stops permits lateral removal of said counterbalancing means without removing said sash.

9. The combination of a window frame having jambs and stops with a sash arranged to slide in said frame, springs to balance said ing substantially greater in size than said springs whereby said springs may each be attached at one of its ends to a jamb and at its other end to said sash and extend at an angle relative to its housing whereby the intermediate portions of said springs will re main free from contact with the sides of said grooves to prevent noises during movement of the sash.

10. The combination of a window frame having j ambs and stops with a sash arranged to slide in said frame, springs to substantially balance the sash secured at their upper ends to the jamb's andlat their lower ends to the sash, said structure having vertical grooves providing spaces for the springs between the ambs and the sash,

the springs being inclined from the axes of the grooves and of less diameter than the spaces afiorded by the 5 grooves whereby the intermediate portions of the sprin with the si es of the may remain free from contact grooves to avoid noises during movement of the sash.

Des Moines, Iowa,

March 29, 1930.

SERN MADSEN. 

